Cloudbreacher

Echolocation. The whale can’t use its blindsight while deafened.

Keen Hearing. The whale has advantage on Wisdom (Perception) checks that rely on hearing.

Strong Winds.  Powerful gusts of wind blow in a 300 foot Sphere centered on the cloudbreacher, dispersing gas or vapor, and extinguishing candles and similar unprotected flames in the area. It causes protected flames, such as those of lanterns, to dance wildly and has a 75 percent chance to extinguish them every 6 seconds.  Any creature moving through this wind must spend 2 feet of movement for every 1 it travels.

Multiattack. The cloudbreacher makes one attack with its bite , one with its tail, and it may use Direct Wind.

Bite. Melee Weapon Attack: +11 to hit, reach 5 ft., one target. Hit: 3d8 + 8 piercing damage. If the target is a Large or smaller creature, it must succeed on a DC 14 Dexterity saving throw or be swallowed by the cloudbreacher. A swallowed creature has total cover against attacks and other effects outside the cloudbreacher, and it takes 1d6 acid damage at the start of each of the cloudbreacher's turns. If the cloudbreacher takes 30 damage or more on a single turn from a creature inside it, the whale must succeed on a DC 16 Constitution saving throw at the end of that turn or regurgitate all swallowed creatures, which fall prone in a space within 10 feet of the cloudbreacher. If the cloudbreacher dies, a swallowed creature can escape from the corpse by using 20 feet of movement, exiting prone.

Tail. Melee Weapon Attack: +11 to hit, reach 15 ft., one target. Hit: 6d6 + 16 Bludgeoning Damage.

Direct Wind.  A line of strong wind 120 feet long and 15 feet wide blasts from around the cloudbreacher. Each creature in the line must make a DC 19 Strength Saving Throw.  Failure: The creature is pushed 60 feet away from the cloudbreacher in a direction that follows the line.  Objects in this line that are not secured are also pushed.  Other cloudbreachers are immune to this wind.